Q.1 Find the next term in the series: 2, 4, 8, 16, ?
18
20
24
32
Explanation - Each term is multiplied by 2. So, 16 × 2 = 32.
Correct answer is: 32
Q.2 Find the missing number: 3, 6, 9, 12, ?
13
14
15
16
Explanation - Each term increases by 3. So, 12 + 3 = 15.
Correct answer is: 15
Q.3 Find the next number: 5, 10, 20, 40, ?
60
70
80
100
Explanation - Each term doubles the previous. So, 40 × 2 = 80.
Correct answer is: 80
Q.4 Find the next term: 1, 4, 9, 16, ?
20
24
25
30
Explanation - These are perfect squares: 1², 2², 3², 4², so next is 5² = 25.
Correct answer is: 25
Q.5 Find the missing number: 1, 3, 7, 15, 31, ?
62
63
64
65
Explanation - Pattern: each term = previous × 2 + 1. 31 × 2 + 1 = 63.
Correct answer is: 63
Q.6 Find the next number in the sequence: 2, 6, 12, 20, ?
28
30
32
36
Explanation - Differences are 4, 6, 8; next difference = 10. So, 20 + 10 = 30.
Correct answer is: 30
Q.7 Find the next term: 1, 2, 6, 24, 120, ?
600
720
840
900
Explanation - These are factorials: 1!, 2!, 3!, 4!, 5!, next is 6! = 720.
Correct answer is: 720
Q.8 Complete the series: A, C, F, J, O, ?
T
S
R
U
Explanation - Positions increase by +1, +2, +3, +4, +5; O(15)+6=U(21).
Correct answer is: U
Q.9 Find the missing term: 4, 9, 19, 39, ?
59
69
79
89
Explanation - Pattern: multiply by 2 then add 1. 39×2+1=79.
Correct answer is: 79
Q.10 Complete the series: 100, 50, 25, 12.5, ?
6.25
7.5
8
9
Explanation - Each term is half of the previous. 12.5 ÷ 2 = 6.25.
Correct answer is: 6.25
Q.11 Find the missing number: 7, 14, 28, 56, ?
98
108
112
120
Explanation - Each term doubles. So, 56×2=112.
Correct answer is: 112
Q.12 Find the next term: 11, 22, 33, 44, ?
50
55
60
66
Explanation - Common difference of 11. So, 44+11=55.
Correct answer is: 55
Q.13 Find the missing term: 9, 16, 25, 36, ?
42
45
49
50
Explanation - These are perfect squares: 3², 4², 5², 6², next 7²=49.
Correct answer is: 49
Q.14 Find the next term: 2, 3, 5, 7, 11, ?
12
13
14
15
Explanation - Series of prime numbers; next prime after 11 is 13.
Correct answer is: 13
Q.15 Find the next number: 1, 8, 27, 64, ?
100
125
150
200
Explanation - These are cubes: 1³, 2³, 3³, 4³, next is 5³=125.
Correct answer is: 125
Q.16 Find the next number: 6, 12, 24, 48, ?
72
84
96
108
Explanation - Each term doubles. 48×2=96.
Correct answer is: 96
Q.17 Complete the series: 10, 20, 40, 80, 160, ?
240
260
300
320
Explanation - Each term is multiplied by 2. 160×2=320.
Correct answer is: 320
Q.18 Find the missing term: 1, 1, 2, 3, 5, 8, ?
10
11
12
13
Explanation - Fibonacci series: sum of previous two terms. 5+8=13.
Correct answer is: 13
Q.19 Find the next number: 19, 28, 37, 46, ?
54
55
56
57
Explanation - Common difference is 9. So, 46+9=55.
Correct answer is: 55
Q.20 Find the missing number: 3, 12, 27, 48, 75, ?
100
108
112
120
Explanation - Pattern: n³ + n → 1³+2=3, 2³+4=12, etc. For n=6: 6³+6=216+6=222; but fits 108 if pattern is n³/2. Correct continuation gives 108.
Correct answer is: 108
Q.21 Find the next term: 100, 121, 144, 169, ?
180
190
196
200
Explanation - These are perfect squares: 10², 11², 12², 13², next 14²=196.
Correct answer is: 196
Q.22 Find the next number: 4, 8, 16, 32, ?
48
56
60
64
Explanation - Each term doubles the previous one. So, 32×2=64.
Correct answer is: 64
Q.23 Find the missing number: 2, 5, 10, 17, 26, ?
35
37
39
41
Explanation - Pattern: add consecutive odd numbers (3,5,7,9,...). 26+11=37.
Correct answer is: 37
Q.24 Find the next term: 13, 26, 52, 104, ?
156
208
216
220
Explanation - Each term doubles the previous. 104×2=208.
Correct answer is: 208
Q.25 Find the next number: 121, 144, 169, 196, ?
210
216
225
230
Explanation - These are perfect squares: 11², 12², 13², 14², next 15²=225.
Correct answer is: 225